"Since the test was officially announced recently, our core developers have been hard at work fixing bugs and adding the missing standards support. Today we reached a 100% pass rate for the first time! There are some remaining issues yet to be fixed, but we hope to have those sorted out shortly."

Look at some of the comments from the Webkit/Safari guys too. They code around a handling issue with the font used in Acid3.

Coding to the test rather than the spec again.

Well actually - it looks like they are basically removing the anti-aliasing of the font so that the rendered result will be "pixel-perfect"... I think that's a stupid requirement for passing the test, personally.